Real Fast. Is Kaplan Wrong Here? O-Chem Question.

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Kaplan says the answer is B. However, I attest to that and say C is the answer, because the negative charge is on the most electronegative atom. Am I wrong or is Kaplan wrong? I'd like to see an explanation for both cases. I'm sure I'm missing some information on my end...

 

[prsndwg]

5 things in order of importance when it comes to resonance:

1.most bonds- most stable
2.octet followers- most stable
3.least formal charges- most stable
4.what you said in regards to charges. no negative on carbon.
5. NOW here: it says.. if negative charge on carbon, very unstable.. but these are in order of importance..

so it could be b/c i guess. but I would go with c or i dont know, since c doesnt follow the octate rule!!!😎

 

[hausee]

Kaplan says the answer is B. However, I attest to that and say C is the answer, because the negative charge is on the most electronegative atom. Am I wrong or is Kaplan wrong? I'd like to see an explanation for both cases. I'm sure I'm missing some information on my end...

B is right. Every atom follows octect rule and charges on atoms are right

C is wrong, carbon doesnt follow octect rule even the charge is right.

 

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5 things in order of importance when it comes to resonance:

1.most bonds- most stable
2.octet followers- most stable
3.least formal charges- most stable
4.what you said in regards to charges. no negative on carbon.
5. NOW here: it says.. if negative charge on carbon, very unstable.. but these are in order of importance..

so it could be b/c i guess. but I would go with c or i dont know, since c doesnt follow the octate rule!!!😎

ughh! rusty on ochem. mind this stupid question; however, is a carbocation an exception to the "octect" rule or am I mixing that up with something else? I know that carbon in C has 6 bonded electrons and no lone pairs though...

 

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B is right. Every atom follows octect rule and charges on atoms are right

C is wrong, carbon doesnt follow octect rule even the charge is right.

cool, thanks. so carbocations (in general) don't follow the octect rule?

 

[UCB05]

cool, thanks. so carbocations (in general) don't follow the octect rule?

Nope. you can't get a carbon carbocation without shaving off electrons and breaking the octet rule.

 

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Nope. you can't get a carbon carbocation without shaving off electrons and breaking the octet rule.

*stores back into memory bank*

i appreciate your help!